Convertible wrench.



J. W; PERKINS & D. W. ROBERTS.

CONVERTIBLE WRENCH.

APPLIGATIQN FILED JULY 6,1910.

Patented Jan.2,1912

W/TZVES 15S TTTTEE @TAT earner carton JOSEPH W. PERKINS AND DANIEL W.ROBERTS, 0F YOUNGSTOWN, OHIO.

CONVERTIBLE WRENCH.

Specification of Letters Patent.

Patented Jan. 2,13t2.

Application filed July 6, 1910. Serial No. 570,668.

To all whom it may concern:

Be it known that we, JOSEPH W. lnnmns and DANIEL W. ROBERTS, citizens ofthe United States, residing at Youngstown, in the county of Mahoning andState of Ohio, have invented certain new and useful Improvements inConvertible Wrenches, of which the following is a specification.

This invention relates to the subject of wrenches, and more particularlyto that 'class of wrenches which are convertible from an ordinary monkeyor nut wrench into a pipe wrench, and vice versa.

To this end the invention has in view a simple and thoroughly practicalconstruction of an auxiliary jaw piece and reversible fasteningstherefor that serve to carry out the objects of the invention in asecure and practical manner.

In the accompanying drawings :'Figure 1 is a side elevation of acombination tool constructed in accordance with the present invention,and showing the parts in position for use as a pipe wrench. Fig. 2 is asec tional view of the tool with the parts in position for use as a pipewrench Fig. 3 is a detail elevation showing the parts of the tool orwrench adapted for use as an ordinary monkey or nut wrench. Fig. 4 is adetail in perspective of the tool shank and outer jaw adapted for use asa screw driver. Fig. 5 is a detail in perspective of the shiftableauxiliary combination jaw.

Like references designate corresponding parts in the several figures ofthe drawings. f The improved tool includes in its organization as theprimary members thereof, a tubular or hollow handle member 1 provided atone end with the inner wrench jaw 2-, and the adjustable tool shank 3,telescoping within the handle member and carrying at its outer end theouter wrench jaw 4, said inner and outer jaws2 and 4 being preferably ofthe conventional form and bearing the same opposing relation as the jawsof an ordinary wrench.

According to the present invention, the outer wrench jaw 4 is providedupon its inner side with the plain, flat, gripping face 5 forming anelement of the tool when employed as an ordinary monkey or nut wrench,said plain gripping face 5 being arranged for use in opposition to thecorresponding plain, flat gripping face 6 formed on the outer side of ashiftable auxiliary Combination jaw piece 7. This shift-able jaw piece 7is provided with slidably embraces the tool shank 3 bet-ween the jaws 2and l-., and upon its inner side that is, opposite its outer plain face6, the said jaw piece is provided with an inclined toothed grippingwedge 9 which is adapted to be opposed to correspondingly toothedgripping surfaces 10 formed on the face of the inner wrench jaw 2, saidopposing elements 9 and 10 constituting the gripping surfaces or faceswhen the tool is employed as a pipe wrench. Also, the said inner wrenchjaw 2 has formed in its face a keeper seat or socket 11 of taperingdepth to accommodate therein the gripping wedge 9 when the auxiliary-jaw piece is fastened to the inner jaw 2.

To adapt the tool for use as the ordinary monkey or nut wrench, theauxiliary jaw piece 7 is held fast to the inner jaw 2 by means ofsuitable fastenin'gs. This is preferably accomplished as shown in thedrawings, that is, by employing reversible fastenings consisting ofpivotal spring latching plates 12. These plates 12 are pivoted at oneend, as at 13, respectively upon the opposite outer sides of the jawpiece 7 and the free end portions of the said plates are provided withcatch openings 14 adapted to be snapped into engagement with the fixedkeeper studs 15 and 16 which are respectively provided on the side facesof the outer and inner wrench jaws.

When the tool is employed as a pipe wrench, thefastenings 12 are engagedwith the studs 15 on the outer jaw, thus holding the auxiliary jaw pieceto the outer jaw. With the parts thus arranged, the tool is ready foruse as a pipe wrench. Correspondingly, when the jaw piece is fastened ina similar manner to the inner jaw, the tool is ready for use as a nutwrench, as shown in Fig. 3 of the drawing.

To provide for holding the tool shank 3 at the desired adjustment, theshank is pro- 'vided along one edge wit-h a series of ratchet teeth 17adapted to be engaged by corre sponding locking teeth 18 provided uponthe inner edge of a holding dog 19. This dog is pivoted at one end, asat 20, to the jaw part, 2 of the handle member 1, and works through anopening 21 in the latter. Opposite its pivoted end, the said dog isprovided with afinger lever 22, and a presser spring 23 hearing on theouter side of the dog normally holds it engaged with the teeth 17.

a slide loop 8 which i An outward movement of the finger on the lever 22releases the dog and admits of any separation desired for the wrench jaws.

The tool shank is provided at'one end with a screw driver point 24, sothat when the tool shankis removed as shown in Fig. 4,'g-it may be usedas either a hammer or as a screw driver.

We claim:

A convertible wrench comprising a toolshankcarrying an outer jaw havingupon its inner side a fiat gripping face, a tubular handle-memberslidably and adjustably mounted on the tool-shank and carrying an innerjaw provided with oppositely arranged toothed gripping surfaces andformed between the said surfaces. with a depression constituting a seatof tapering wedge adapte mounted on the tool-shank between the two jawsand rovided upon one side with a plain fiat face, and upon its, oppositeside ,With acentrall arranged projecting toothed d to lie in a planebetween and oppose said toothed gripping surfaces, and also adapted tobe completely housed within the said seat, and reversible fastenings forsecuring the auxiliary jaw piece 'to either jaw.

In testimony whereof we hereunto afix our signatures in the presenceoftwo witne'sses.

JOSEPH W. PERKINS. DANIEL W. ROBERTS;

